preformation

P3R1E1F4O1R1M3A1T1I1O1N1
UK/pɹiːfɔːˈmeɪʃ(ə)n/

noun

Prior formation.

Similar
theory of preformation
Scrabble 19

Meanings

nounpreformation (countable and uncountable, plural preformations)

plural preformations · alternative praeformation

  1. countableuncountablePrior formation.
  2. countablehistoricaluncountablebiologyThe theory that organisms are fully developed in the form of an egg or seed, and just increase in size (as opposed to epigenesis).

    Preformation, as even Aristotle spotted, merely postpones the problem, for how did the homunculus get its shape?

    1999, Matt Ridley, Genome, Harper Perennial, published 2004, page 174

Synonyms & antonyms

nouna theory (popular in the 18th century and now discredited) that an individual develops by simple enlargement of a tiny fully formed organism (a homunculus) that exists in the germ cell

Similar
theory of preformation
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*per-
  2. Proto-Indo-European*preh₂-
  3. Proto-Indo-European*préh₂i?
  4. Proto-Italic*prai
  5. Proto-Italic*prai-
  6. Latinprae-
  7. Middle Englishpre-
  8. Englishpre-
  9. Englishformation
  10. Englishpreformation

From pre- + formation.

Full word history & related roots →

Rhymes & wordplay

Anagrams

Cite this entry
APA

preformation. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/preformation

MLA

“preformation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/preformation. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “preformation,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/preformation.

Source: preformation on Wiktionary, CC BY-SA 4.0.